Question: If y = x 4 c o s x , then d 2 y d x 2 = 4 x 3 - s i n

If y=x4cosx, then d2ydx2=
4x3-sinx
12x2-cosx
4x
4x3-cosx
12x2sinx
If y = x 4 c o s x , then d 2 y d x 2 = 4 x 3 - s

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